在YAML Front Matter变量中使用液体标记 [英] Using liquid tags in YAML Front Matter variables

问题描述

是否可以在YAML Front Matter变量中使用Liquid标签?

Is it possible to use Liquid tags in YAML Front Matter variables?

例如，如果test.html包含:

For example if test.html contains:

---
variable: "Date: {% date: '%D' %}"
---
{{ page.variable }}

然后Jekyll将生成以下HTML:

then Jekyll will generate the following HTML:

Date: {% date: '%D' %}

而不是类似的东西:

Date: 03/13/14

基本上，我希望处理YAML Front Matter变量中的Liquid标签.

Basically I'd like the Liquid tags in the YAML Front Matter variables to be processed.

推荐答案

听起来您正在尝试将格式化的日期存储在变量中，因此您不必每次使用时都重新格式化日期.

It sounds like you're trying to store a formatted date in a variable so you don't need to re-format the date each time you use it.

除了在前件上过滤日期外，您还可以在前件下添加一个Liquid捕获语句.这将允许您将格式化日期分配给变量，以便可以在表达式中使用它.

Rather than filtering the date in the front matter you could just add a Liquid capture statement just below the front matter. This will allow you assign your formatted date to a variable so you can use it in expressions.

---
title: Some sweet title
layout: default
date: 2014-9-17 # Could come from post's filename, but I put it here explicitly
---
{% capture formatted_date %}{{ page.date | date: "%-d %B %Y" }}{% endcapture %}

一旦有了新的格式化日期变量，就可以在任何地方将其用作表达式:

Once you have your new formatted date variable you can use it as an expression anywhere:

{{ formatted_date }}输出:17 September 2014

有关格式化日期本身的更多信息.

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